Riverside Theatre, for the musical South Pacific: by appointment 10 a.m.-1 p.m. Jan. 20; needed are performers to play Nellie Forbush, Bloody Mary, Harbison, Brackett, Liat and Billis, as well as men and women for chorus roles; each performer should sing 16 bars of a standard Broadway show tune from the era and should bring sheet music in the proper key; accompaniment will be provided; show will be performed in March. Appointments: Brian Spitler at (407) 231-5860.